Find out more about the technology behind and benefits of Celestron Starbright XLT optical coatings?
Celestron - C8-A XLT - 8" SCT Optical Tube Assembly for CGE/ CGX Mounts - 91024-XLT
- As the larger cousin to the C6-A XLT, the Celestron C8-A XLT has 843x the light gathering power of the human eye which dwarfs smaller telescopes of this scale.
- This Celestron 8\" SCT OTA includes a D series or Losmandy standard dovetail and was designed to fit the Celestron CG series mounts or any mount that will accept D series dovetails.
- A Schmidt-Cassegrain optical tube assembly, the corrector plate and primary mirrors render a focal ratio of f/10 which makes these type of catadioptric designs excellent for both visual and imaging as well as being compatible with many optical accessories to adjust its field of view and focal length.
- With the addition of Celestron's own StarBright XLT coatings light transmission has been enhanced as well, making the C8-A XLT great for planetary and terrestrial observing and wide field observing of deep sky objects.
Celestron - C8-A XLT - 8" SCT Optical Tube Assembly for CGE/ CGX Mounts - 91024-XLT
As the larger cousin to the C6-A XLT, the Celestron C8-A XLT has 843x the light gathering power of the human eye which dwarfs smaller telescopes of this scale. As a Schmidt-Cassegrain OTA, the corrector plate and primary mirrors render a focal ratio of f/10 which makes these type of catadioptric designs excellent for both visual and imaging as well as being compatible with many optical accessories to adjust its field of view and focal length. With the addition of Celestron's own StarBright XLT coatings light transmission has been enhanced as well, making the C8-A XLT great for planetary and terrestrial observing and wide field observing of deep sky objects. One accessory suggested is the focal Reducer by Celestron (NOT INCLUDED, SOLD SEPARATELY!) will reduce the focal ratio of this optical tube to an f/6.3 which is much faster for observing and imaging deep sky objects, especially when using large pixels on larger CCD chips. For the visual astronomer, they'll be pleased to know this optical tube comes packaged with some accessories including a 25mm eyepieces (for a magnification of 81x), star diagonal, 1.25" visual back, and 6x30 finderscope.
Features:
- 8 inch aperture
- f/10 focal ratio
- Schmidt-Cassegrain OTA
- StarBright XLT Coatings
- 6x30 finderscope
- 1.25" visual back
- 25mm eyepiece
- Star Diagonal
Additional Product Info & Helpful Links
| UPC | 050234102490 |
|---|---|
| Brand | Celestron |
| Free Shipping | Free Shipping Available |
| Aperture | 203.2mm (8") |
| Case Included | No |
| Focal Length | 2032mm (80") |
| Focal Ratio | f/10 |
| Focal Length of Eyepiece 1 | 25mm |
| Magnification of Eyepiece 1 | 81x |
| Finderscope Included | 6x30 |
| Diagonal Included | 1.25" Star Diagonal |
| Included Dovetail | CGE D Style Dovetail |
| Optical Tube Material | Aluminum |
| Highest Useful Magnification | 480x |
| Lowest Useful Magnification | 29x |
| Limiting Stellar Magnitude | 14 |
| Resolution - Rayleigh | 0.69 arc seconds |
| Resolution - Dawes | 0.57 arc seconds |
| LIght Gathering Power (Compared to the Human Eye) | 843x |
| Size of Secondary Obstruction | 64mm (2.5") |
| Secondary Mirror Obstruction By Diameter | 31% |
| Secondary Mirror Obstruction By Area | 9.77% |
| Optical Tube Length | 432mm (17") |
| Optical Tube Diameter | 238mm (9.37") |
| Optical Tube Weight | 12.5 lbs (5.67 kg) |
| Warranty | 2 Years |
| In The Box | 8” SCT Optical Tube |
8” SCT Optical Tube
D/ CGE Series Dovetail
25mm Plossl Eyepiece
6x30 Finderscope & Bracket
1.25” Visual Back
Star Diagonal















